Download iREB for iOS 5.1.1 to Fix 1600, 1601, 1602, 1604 Error

Some of the most common errors that you may experience while restoring your iPhone, iPad and iPod touch using a custom IPSW are the ever annoying iTunes 16xx errors. This is because your device's iBoot is capable of differentiating a stock IPSW from a custom one. If the iBoot is able to recognize that you are trying to restore to a custom IPSW, there is a good chance that iTunes will return a 16xx error. But of course, we are here to help you out in case you cannot restore iOS 5.1.1 custom IPSW. You will just have to download a tool called iREB to patch your device's iBoot using using Geohot's Limera1n exploit.This tutorial will help you put your device into Pwned DFU mode using iREB R5 on Windows. Once you are in Pwned DFU mode, you should stop seeing any 16xx (1600, 1601, 1603 & 1604) errors.

Steps on How to Fix All 16xx Errors While Restoring Custom IPSW Using iREB 5.1.1 for iOS 5.1.1:

Download iREB 5.1.1 for Windows from this link and extract the contents of the file on your desktop.

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Raedi • 4 years, 11 months ago

Try my sollution :Open iREB and follow same instructionOpen iTunes and press shift+RestoreSelect File with modifed by shsh bloobsWhen show error -1 and screen is restore mode, just open cydia > extras > restore fixThere are a button Next but cant be clickJust try to go DFU mode, when button Next can be click, as fast you can press the next button, and then your iPhone will be normallyCMIIW :D